package main

import (
	"fmt"
	"os"
	"runtime"
)

func main() {
	fmt.Println("USER:", os.Getenv("USER"))
	fmt.Println("GOPATH:", os.Getenv("GOPATH"))
	fmt.Println("GOROOT:", os.Getenv("GOROOT"))
	fmt.Println("GOROOT:", runtime.GOROOT())
}
